期刊
AEROSPACE
卷 8, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/aerospace8100305
关键词
thermal control; synthetic aperture radar (SAR); launch environment test; thermal (gap) pad
资金
- Ministry of Science and ICT (MSIT)
This paper presents the effectiveness of the thermo-mechanical design of a high-speed digital receiver unit developed for spaceborne applications. The design focuses on thermal management and passive thermal control methods, with the effectiveness validated through testing.
This paper presents the effectiveness of the thermo-mechanical design of a high-speed digital receiver unit (HSDRU) developed for spaceborne synthetic aperture radar applications. The main features of HSDRU's thermo-mechanical design include the thermal management of high-heat dissipation units by adopting heat sinks with the additional function of structural stiffeners and securing the heat rejection path to the upper side of electronics that interfaces the foil radiator for the on-orbit passive thermal control of electronics exposed to deep space environments. The thermal design, which adopts a thermal gap pad, is closely related to the solder joint fatigue life in a launch vibration environment, owing to its initial compressive static load between the heat sink and heat dissipation units that enhances the heat transfer capability. The effectiveness of the design was validated via the qualification level of launch environment tests.
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